查询词典 generator

Finally, some effective measures to protect the high-power transistor are presented by simulation, which provides the theoretical guidance for the modified design of the exciter of the generator.

因此必须对该类故障产生的机理进行分析，查明影响因素，为励磁系统的改进设计提供理论依据，提高发电机系统

This thesis calculates emphases the excitor circult of AC excitor .but the calculate of excitor circult must solve two problem: how to caculate the output AC phasic potential, phasic electric current and the capacity of AC excitor basing on the main generator direct current excitating voltage and direct current excitation current ;how to caculate the armature feedback, power factor and required ampere-turn of AC exciter.

本文重点对交流励磁机的磁路进行计算，但磁路计算先要解决两个问题：如何根据主发电机给定的直流励磁电压和直流励磁电流计算出交流励磁机的输出交流相电势，相电流及交流励磁机容量；如何计算交流励磁机的电枢反应，功率因数及其所需的安匝数。

In order to improve the reliability of the nuclear Generating Sets and the stabilization of the power system, prevent the long time low frequency oscillation caused by the disturbed of the outside electrical net, assured improving the stabilization margin of the nuclear generating sets in the precondition of enough transient stability, validate the sensitivity of the parameter to the damping of Generating Sets of the MEC5220 digital excitation adjustor produce in Japan that used in the Second Project of Qinshan Nuclear Power Plant, confirm the parameter rationality of the digital excitation adjustor, optimize the parameter of PSS, in this paper, we put up a in-depth study to the principle of MEC5220 digital adjustor produce in Japan by the PSS/E software that develop by the PTI Company in the USA, completed the modeling of the excitation adjustor, PSS, generator, excitor, described the performance of this excitation adjustor, analyzed the essential reason that caused the low frequency oscillation, illuminated the factor that influence the damping characteristic of the MEC5220 digital excitation adjustor. Based on model and emulate, this paper optimized the primary parameter of the excitation adjustor, make a reasonable regulation to the PSS parameter.

为提高核电机组的运行可靠性和接入系统的安全稳定性，防止在外电网的干扰下核电机组发生长时间的低频振荡，保证机组在暂态稳定的前提下提高其稳定裕度，验证秦山核电二期核电机组所配日产MEC5220型数字式励磁调节器参数对机组阻尼的灵敏性，确定数字式励磁调节器的参数的合理性，优化PSS整定参数，本文利用美国PTI公司研发的PSS／E软件对日产MEC5220型数字调节器的原理进行进行了深入细化的研究，完成了励磁调节器、PSS、发电机、励磁机的建模，描述了该型励磁调节器的性能，分析了产生低频振荡的根本原因，阐明了影响阻尼特性的因素。

Then introduce the principle of work and the construction characteristic. This thesis calculates emphases the excitor circult of AC excitor .but the calculate of excitor circult must solve two problem: how to caculate the output AC phasic potential, phasic electric current and the capacity of AC excitor basing on the main generator direct current excitating voltage and direct current excitation current ;how to caculate the armature feedback, power factor and required ampere-turn of AC exciter.

本文重点对交流励磁机的磁路进行计算，但磁路计算先要解决两个问题：如何根据主发电机给定的直流励磁电压和直流励磁电流计算出交流励磁机的输出交流相电势，相电流及交流励磁机容量；如何计算交流励磁机的电枢反应，功率因数及其所需的安匝数。

Regarding bad condition of oil, carbon powder and dust enter into Generator stator and dust enter excitor stator and high temperature of the excitor stator coil.

针对发电机静子漏进油、碳粉、尘土，励磁机静子漏进尘土等物，励磁机静子线圈温度高等不良现象，提出改进方案，实施后效果良好。

Microprocessor-based excitor has rapid regulatingspeed, high precision, more reliability and other excellences.What Double-channel microprocessor-based excitation regulators mean that onesynchronous generator has two microprocessor-based regulators, one as the main, theother as the backup.

双通道励磁调节器是指在每个发电机配置两个微机励磁调节器，一个为主机，一个为备机，两个通道之间实现冗余备份，可以极大提高励磁系统的可靠性。

This paper describes a design of the frontal channel of pressure sensor based on feedback and mainly accomplishes the design and manufacture of force generator, electric drive, displacement-measure circuit and the system mechanical structure.It shows out the analysis, debugging of excogitation and the graphics of corresponding objects.

本文着重描述了反馈式力传感器的前向通道设计，主要完成了力发生器及驱动电路、位移检测电路、系统机械结构的设计及制作，并给出了方案的分析和调试及相应的实物图。

This paper describes adesign of the frontal channel of pressure sensor based on feedback and mainly ac complishes the design and manufacture of force generator,electric drive,displacement-measure circuit and the system mechanical structure.It shows out the analysis,debugging of excogitation and the graphics of corresponding objects.

本文着意描述了反馈式力传感器的前向通道设计，主要完成了力发生器及驱动电路、位移检测电路、系统机械结构的设计及建造，并给出了方案的分析和调试及相应的实物图。

Results show that expender cycle and fuel-rich gas generator cycle have higher synthetically specific impulse and propellant specific impulse, and have remarkably better performance than other cycles.

研究表明，膨胀循环和富燃燃气发生器循环的综合比冲和推进剂比冲较大，相对其它系统循环方案有明显的优势。

In the process of arithmetic design, Newton method is used to compute power flow of network. Graph theory knowledge is used to determine all paths from generator to load. To improve efficiency, thesis use branch expunction method to optimize the node order.

在算法设计过程中，采用牛顿－拉夫逊法进行潮流计算得到系统潮流分布，利用图论原理中的路径搜索算法确定了发电机对负荷的供电路径，此外为了提高潮流跟踪的计算效率，利用了支路消去法进行节点顺序的优化。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。